Right on the heels of yesterday's VMware announcement, Heroku has launched the public beta of their PostgreSQL-as-a-Service (PGAAS) cloud at HerokuPostgres. All right!

Heroku already has infrastructure and experience running a large PostgreSQL cloud for their Rails, Node.js and Java users. So what you're getting with Heroku is a public cloud which has already been supporting hundreds (thousands?) of users for a couple of years.

Plus, they have the best graphics of any of the PostgreSQL cloud hosts.

Anyway, this is a public beta, so you can sign up and try it out now. However, Heroku warns not to put any critical data on it until the service has been tested a bit more. Give it a spin, and tell Heroku what you think.